利用红外线传感器完成小车的循迹功能，效果很好，小车速度快，且运行平稳,The use of infrared sensors for tracking the completion of car features, very good, fast car, and the smooth operation

采用CC2430芯片完成的智能家居协调器代码，实现控制开关，红外，以及各种传感器等外围设备。-CC2430 chip uses smart-home coordinator to complete the code, to achieve control switch, infrared, and a variety of sensors and other peripherals.

arduino程序，用两个红外线传感器来判断人的行走方向等功能-arduino program, using two infrared sensors to determine the direction of people walking and other functions